20516208 has 20 divisors (see below), whose sum is σ = 53000328. Its totient is φ = 6838720.

The previous prime is 20516183. The next prime is 20516213. The reversal of 20516208 is 80261502.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213663 + ... + 213758.

Almost surely, 2^20516208 is an apocalyptic number.

It is an amenable number.

20516208 is an abundant number, since it is smaller than the sum of its proper divisors (32484120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20516208 is a wasteful number, since it uses less digits than its factorization.

20516208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427432 (or 427426 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 20516208 is about 4529.4820895992. The cubic root of 20516208 is about 273.7572930231.

The spelling of 20516208 in words is "twenty million, five hundred sixteen thousand, two hundred eight".